Original research paper The subject of this paper is the analysis of the possibilities of using biodegradable municipal and agricultural waste in a biogas energy production facility on the island of Krk. The main characteristic of this type of waste is the variable composition. The total amount of municipal waste on the largest Croatian island of Krk is relatively small in comparison to cities. Particularly significant is the high variability of feedstock volumes depending on the period in the year. As a result, the biogas production is unstable and varies on a monthly basis. To overcome that situation a scenario with two cogeneration units was compared to a scenario when only one unit is used. The approach of two units, that operate based on the available biogas inflow, has shown to be more efficient than using a single unit. Net GHG emissions are negative. Keywords: organic waste; biogas; potential; cogeneration; GHG reduction Analiza mogućnosti korištenja bioplina dobivenog fermentacijom biogenog otpada na hrvatskom otoku KrkuIzvorni znanstveni članak Predmet ovog rada je analiza mogućnosti korištenja biogenog dijela komunalnog i poljoprivrednog otpada u bioplinskom energetskom postrojenju na otoku Krku. Karakteristike ove vrste otpada su različiti sastav i velike sezonalne varijacije u količinama otpada. Ukupna količina komunalnog otpada na najvećem hrvatskom otoku Krku je relativno mala u usporedbi s gradskim središtima, iako postoje značajne oscilacije u količini otpada tijekom godine uslijed turističke aktivnosti tijekom ljeta. Na temelju dostupnih količina organskog otpada tijekom godine analiziran je energetski potencijal dobivenog bioplina s obzirom na dostupna tehnička rješenja za energetsko iskorištavanje istog. Bioplinsko postrojenje je predloženo za anaerobnu fermentaciju otpada i obradu bioplina. Simulacija efekata primjene bioplinskog i kogeneracijskog postrojenja za razdoblje od jedne godine je provedena kako bi se optimiziralo za maksimalnu energetsku efikasnost i proizvodnju električne i toplinske energije. Uspoređeni su scenariji sa korištenjem jedne ili dvije kogeneracijske jedinice. Rezultati pokazuju da je u slučaju veoma varijabilne proizvodnje bioplina tijekom godine energetski efikasnije korištenje dvije kogeneracijske jedinice. Emisije stakleničkih plinova su negativne.
Compliance with modern environmental norms and regulations is an increasingly important requirement in the shipbuilding process of ship design and construction. Related to the ship production process, volatile organic compounds (VOCs), nitric oxides and particulate matter are the main emissions of harmful gases in the shipyard. This paper analyzes air emissions from the ship production process in a shipyard. Air emissions are quantified from either in-situ measurements from emission sources, or by materials that are used in the shipbuilding process, and the acquired data from those measurements is calculated as yearly emissions. Emission quantities of VOCs, nitric oxides, carbon dioxide, carbon monoxide and particulates are analyzed regarding possible reduction techniques considering efficiency and investment costs for using these methods. In conclusion, the best available and feasible emission reduction methods are suggested, and a suggestion for achieving the goal of a net zero emission shipyard.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.